ul {
  width: 500px;
  border-radius: 10px;
  background-color:#DDD;
  list-style: none;
  margin: 0;
  padding: 0;
}
ul a.when {
  display: block;
  margin-bottom: 5px;
  border-bottom: 1px solid #BBB;
}
li {
  padding: 10px;
}
li:nth-child(even) {
  background-color:#EEE;
}
section {
  float: left;
  margin-right: 20px;
}
